Digital receiver Denn DDT121: instructions, firmware installation

Denn DDT121 – what kind of prefix, what is its feature?
This budget digital set-top box for DVB-T and
DVB-T2 can work not only with new, but also with old TVs. To connect with the latter, there is a tulip cable. The receiver can work with the Internet, provided that a WiFi adapter is connected to the USB connector, which can be purchased separately.

Specifications and appearance

The prefix is ​​a small black box smaller than the palm of your hand. Its dimensions are 90x20x60 mm, and its weight is 70 g. A remote control is used to work with it. It has the following buttons:

1. Buttons for turning on, off, moving to the menu.
2. Digital, designed to switch channels.
3. Various function keys.

There is no native WiFi adapter here, but to fix this, you can connect an external adapter to the USB port. The set-top box uses the AvaiLink AVL1509C video processor. Its use is common among budget DVB-T2 tuners. 1080p viewing quality available.

Ports

The following ports are used here:

1. The device has two USB connectors located on different sides of the device.
2. There is an input for connecting an antenna.
3. The HDMI port is designed to work with modern TVs.
4. AV output is designed to connect to older TVs.

There is also a connector for connecting the power adapter.

Equipment

The set-top box for the TV is supplied with the following configuration:

1. The device itself. The receiver is small enough to fit in the palm of your hand.
2. Remote control.
3. User manual.
4. The kit includes a power adapter that is rated for 5V and 2A.
5. There is a video cable type “Tulip”. It is used to connect to old TVs.

All this is placed in a neat little box.

Connecting and configuring the Denn ddt 111 set-top box: photo instruction

Before starting work, the prefix must be connected. To do this, you need to connect the power adapter and turn it on, then make an HDMI cable and connect it to the TV. After switching on, you will need to configure. The initial form will appear on the screen.
And she needs to specify the preferred interface language, the country where the equipment is used. Usually the settings on this page are such that they can be accepted by default. After that, click on the bottom line in order to go to the next page.
Now you can select auto search. As a result, all available channels for viewing will be found. If desired, the user can resort to a manual search.
To do this, select the appropriate settings item. Next, you need to specify the number and frequency of the channel and give a command to search.
The found channels must be saved. In the future, it will be enough to indicate the desired number on the remote control and you can start viewing. You can also set other settings according to user preferences. Here it is possible to use parental control, if necessary, reset to factory settings. As new updates are released, there are means to install them on the set-top box. There is an option to automatically turn off the device. When connecting to an old TV, you will need to specify the standard that it uses.
If a special cable is required for connection, it must be purchased separately. Download complete and detailed instructions for the Denn DDT121 receiver:
Instruction DDT 121

DENN DDT121 TV receiver firmware: where to download and how to update

Developers release updates in the form of firmware. Information about the release of new versions is published on the manufacturer’s website https://denn-pro.ru/. The user should regularly check for firmware. If it is on the site, you need to download it. Using a flash drive, the file is connected to the console. Then, through the settings, they give the command to update. This procedure cannot be interrupted. You have to wait until it finishes. Download the firmware file from the link: https://denn-pro.ru/product/tv-aksessuary/tyunery/denn-ddt121/ DENN DDT121 digital set-top box firmware – video instructions for updating the software: https://youtu.be/pA1hPnpEyvI

Cooling

Ventilation holes are provided on the top and bottom faces. They will not allow the device to overheat during prolonged operation. Inside the case is a finned aluminum heatsink that helps dissipate heat. However, it has a small size – the side does not exceed 1 cm. During operation, even after an hour, the heating is very strong, which can affect the performance of the set-top box.

Problems and solutions

The tuner gets very hot during operation. This is primarily due to the insufficiently efficient aluminum heatsink. To cope with the problem, you need to give the device time to cool down. You can also put a more powerful one instead of the standard one, but for this you will need to first disconnect the old one. If you need to connect to the VGA connector, then you can additionally purchase the appropriate adapter for HDMI. This will allow the set-top box to work with a computer monitor. When you plug in a flash drive, it starts to get very hot. To avoid this, you can use an extension cable. According to user reviews, once in one or two weeks, the channel settings may go astray. In this case, it is recommended to perform automatic channel tuning. If it does not find all the necessary ones, then it makes sense to carry out manual configuration.

Pros and cons

The advantages of this model include the following:

1. The manufacturer offers a two-year warranty.
2. The set-top box, when connected, uses the HDMI port, providing high-quality video signal transmission to the TV.
3. The budget cost of the device.
4. You can view video files from a connected flash drive.
5. It uses a small and convenient remote control.
6. It is possible to connect to old kinescope TVs.

The following should be noted as a disadvantage:

1. No built-in adapter
2. Strong heating during prolonged use.
3. Sometimes the channel settings get lost.

Complicated interface – this is expressed in the fact that some options have to be searched for a long time. For example, launching a video file that is located on a USB flash drive connected to the receiver can be.